From 4b528e0f6cdb212844b86d4c7ca74c101f121961 Mon Sep 17 00:00:00 2001
From: michaelangel007 <testcraft@sharedcraft.com>
Date: Fri, 8 Jul 2016 08:34:44 -0700
Subject: [PATCH] Inital commit

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 README.md | 94 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 94 insertions(+)
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+# ThunderClock Plus
+
+# == Parts List ==
+
+* 1x 1990C
+* 1x 2708 (EPROM)
+* 1x 74LS08
+* 1x 74LS27
+* 1x 74LS74
+* 1x 74LS109
+* 1x 74LS132
+* 1x 74LS126
+* 1x 74LS174
+* 1x CD4050  (Motorola MC14050B / CP QQ8014)
+* 1x D4050
+* B1 HOLDER BATTERY 1CELL N ALUMINUM DigiKey: [36-154-ND](http://www.digikey.com/product-detail/en/keystone-electronics/154/36-154-ND/61790)
+* B2 HOLDER BATTERY 1CELL N ALUMINUM DigiKey: [36-154-ND](http://www.digikey.com/product-detail/en/keystone-electronics/154/36-154-ND/61790)
+* C1 104Z (East)
+* C2 104Z (East)
+* C3 104Z (North)
+* C4 104Z (North)
+* C5 104Z (East)
+* C6 104Z (North)
+* C7 NPO 20J
+* C8 variable
+* CX ???
+* D1 ??? M5?2?   (Diode)
+* D2 ??? N40-0 (Diode)
+* R 1 Brown- Black- Orange Gold = 10 * 1K Ohm +/- 5%
+* R 2 Yellow Violet Orange Gold = 47 * 1K Ohm +/- 5%
+* R 3 Yellow Violet Orange Gold = 47 * 1K Ohm +/- 5%
+* R 4 Yellow Violet Orange Gold = 47 * 1K Ohm +/- 5%
+* R 5 Yellow Violet Orange Gold = 47 * 1K Ohm +/- 5%
+* R 6 Orange Orange Red--- Gold = 33\*100 Ohm +/- 5%
+* R 7 Brown- Black- Orange Gold = 10 * 1K Ohm +/- 5%
+* R 8 Yellow Violet Orange Gold = 47 * 1K Ohm +/- 5%
+* R 9 Orange Orange Red--- Gold = 33\*100 Ohm +/- 5%
+* R10 Blue-- Orange Black  Gold = 63 *  1 Ohm +/- 5%
+* R11 Brown- Black- Orange Gold = 10 * 1K Ohm +/- 5%
+* R12 Brown- Black- Green- Gold = 10*100K Ohm +/- 5%
+* R13 Brown- Black- Green- Gold = 10*100K Ohm +/- 5%
+* SW1 DIP SWITCH 
+* SW2 -- not installed --
+* Q1 2N3904
+* Q2 2N3904 ???
+* Q3 2N3904
+* Q4 2N3904 ???
+* Y1 ???
+
+|Color  |Digit|Multiplier|
+|:------|:---:|---------:|
+|Black  |  0  |    1 Ohm |
+|Brown  |  1  |   10 Ohm |
+|Red    |  2  |  100 Ohm |
+|Orange |  3  |   1K Ohm |
+|Yellow |  4  |  10K Ohm |
+|Green  |  5  | 100K Ohm |
+|Blue   |  6  |   1M Ohm |
+|Violet |  7  |  10M Ohm |
+|Grey   |  8  |          |
+|White  |  9  |          |
+|Gold   |  -  |    x 0.1 |
+|Silver |  -  |   x 0.01 |
+
+# == Layout ===
+
+* Component Side:
+
+```
+ _______________________________________________________________________________
+|                B2      B1      C8    SW1           ThunderClock Plus          |
+|R12 R13 Q4                     Y1 C7                              C4       Q1  |
+|                             D2     1990C  CD4050  74LS174  74LS08   74LS132   | A
+|        Q3                 Q2                    R3       R2                R1 |
+|                                    R4                                         |
+|        R11                  R7     R5                                   Sw2   |
+|                                                                               |
+|            D1   74LS74  74LS109  74LS126                   2708  C3  74LS27   | B
+|        R10    R9      R8       R6                                C2           |
+|                                       C6         C5          C1            CX |
+ ___________________________________________________                         ___|
+                                                    |_|_|_|_|_|_|_|_|_|_|_|_|
+                                                     1                    25
+```
+
+# == Schematic ==
+
+* [ ] TODO
+
+# == Questions ==
+
+* What is Y1 ?
+* What is CX ?
+